Adjustable holder for laminated forms.



L. R. CARROLL.

ADJUSTABLE HOLDER FOR LAMINATED FORMS.

APPLICATION FILED 13110.12, 1912.

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m Km 5 m W Z w fima 5 Qua [.1 M96 x 1 PLANOORAPH c0.. WASH UNITED STATEd PATENT @FFIQE.

LEWIS R. CARROLL, OF CHARLOTTE, NORTH CAROLINA.

ADJUSTABLE HOLDER FOR LAMINATED FORMS.

To all whom it may concern:

Be it known that I, LEWIS R. CARROLL, a citizen of the United States, and a resident of Charlotte, in the county of hflecklenburg and State of North Carolina, have invented a new and. useful Improvement in Adjustable Holders for Laminated Forms, of which the following is a specification.

My invention is an improvement in ad justable holders for laminated forms, and has for its object the provision of a self radius striking form for bending and gluing together two or more pieces of wood to any radius desired, and wherein means is provided for holding the strips in the proper shape, the said holding means being adjustable to permit the formation of an arc of any radius.

In the drawings :F igure 1 is a top plan view of the improved form, Fig. 2 is a section on the line 22 of Fig. 1, and Fig. 3 is an enlarged perspective view of a portion of the form.

The present embodiment of the invention comprises a substantially triangular frame, consisting of the side members 1 and 2, and the cross brace 3. The side members 1 and 2 are provided at their junction with a depending foot 1, and each of the side members is provided at its opposite end with a similar foot 5, the feet 4 and 5 each having an opening 6 for receiving a screw or the like to hold the frame in place.

The side members 1 and 2 are arranged at a right angle with respect to each other and the brace 3 is arranged near the free ends of the side members. The said frame may be of wood or any suitable material, as for instance, cast iron or the like.

Four radius rods are provided, two being connected wit-h each of the side members 1 and 2. The radius rods 7 and 8 of each side member are similar, each having at its outer end a reduced perforated lug 9, and having upon its upper face, a scale 10.

A pair of posts is mounted on each of the side members for supporting the radius rods, each of the said posts 11 having a depending stem 12, which passes through an opening in the frame member and has a nut 13 threaded thereon below the said member. A washer 1 1 is arranged between each nut and the frame member, and each of the posts is provided with a transverse opening 15 for receiving the radius rod.

A set screw 16 is threaded through a ver- Specification of Letters Patent.

Application filed December 12, 1912.

I "atentcd Nov. 1 8,1913. Serial No. 736,321.

tical opening in. the top of each post and the lower end of the screw is adapted to engage the radius rod to clamp it in adjusted p0sitron. The outer reduced end 9 of each ra dius rod is received between a pair of verticz lly spaced lugs 17 on one of the members 18 of an angle plate, and a pin ll) is passed downwardly through registering openings in the lugs and in the end of the radius red as shown more particularly in Fig. 2 to pivot the radius rod to the angle plate.

A form plate 20 is connected to the members 18 of the respective angle plates by n'ieans of rivets 2'1, and the other member 32 of each angle plate extends transversely of the lower edge of the form 20 and beyond the outer face thereof as shown. The form 20 also connected to the supporting frame at the apex thereof, that is, at the junction of the members 1 and 2, by means of an angle plate 523-2 1. The vertical member 23 of the angle plate provides a stop against which the center of the form rests, and the horizontal portion 2 1 of the plate is secured to the frame by bolts 25 or the like.

A lug 26 extends outwardly from the supporting frame at the apex thereof beneath the lower edge of the form 20, the said lug 26 being of the same shape as the lugs 22 and for the same purpose. The form 20 is provided with a bearing 27 near each end. each bearing having lateral flanges 28. which are riveted to the form, and a set screw 29 is threaded through the bearing for engaging a rod 30 to hold the rod in adjusted position.

Each of the rods 30 is slidable through the bearing and the said rods are of sulficient length to engage at their lower ends the supporting surface upon which the feet 4 and 5 of the supporting frame rest and to extend above the form as shown in Fig. 2.

In operation, the supporting frame may be secured to a supporting surface by means of bolts or the like passing through the openings 6 of the feet 41 and 5. The radius rods are now adjusted to shape the form 20 to the required are and when the said form is properly shaped the set screws 16 are tightened to hold the radius rods in adjusted position.

After the form has been properly shaped, the rods 30 are adjusted as shown in Fig. 2, the lower ends thereof engaging the supporting surface upon which the feet t and 5 of the supporting frame stand. The strips of wood to be laminated are now glued on one face, and the other face not provided with glue is laid against the outer face of the form 20, the lower edge of the strip resting on the portions 22 of the angle plates 1S-22 and upon the lug 26.

As many strips are placed end to end as may be necessary to complete the article, each of the said strips having the face provided with glue outwardly. Other strips of wood are now placed against the outer faces of the first-named strips, that is, against the glued faces of the said strips and the process is repeated until a structure of suilicient thickness has been made. The strips of wood are then clamped to the form by any suitable means as for instance, by the ordinary screw clamps, as many clamps being used as may be necessary.

After the article has been clamped to the form, the pins 19 are removed from the openings of the lugs 17 and the reduced end 19 of the radius rods and the form is disconnected from the radius rods and from the supporting frame. The bolts 31 that connect the portion 23 of the angle plate 2324 to the form are removed, in order that the form may be released from the supporting frame. After the laminating structure has stood a suflicient time to permit the glue to become set, the clamps may be removed, and the form may be removed fro-m the laminated structure.

Interchangeable forms may be provided, each having the angle plates l822, so that the operation may continue without the necessity of waiting for the glue in the laminated structure to become set. The rods 30 are for the purpose of supporting the form at the same height as the radius rods and the said rods may be removed when the form is removed if desired.

It will be noticed from an inspection of Fig. 2 that the reduced portion 9 of each radius rod forms a shoulder on the lower face thereof.

A form of clamp for holding the formed article in proper position after it has been completed is indicated. in Fig. 1. The clamp consists of a double nut 82 having its ends oppositely threaded and rods 33 each having an angular lug 3% at its free end, are threaded into the nut. l/Vhen the article has been completed, the lugs 34L are engaged with the ends of the article at the outer face thereof, and the nut 32 is turned to draw the rods inwardly until the lugs 34: bear firmly against the article. The article may now be removed from the form and laid away to dry.

I claim 1. A device of the character specified, comprising a flexible resilient form plate having on one face at the lower edge thereof and at its ends spaced extensions for engag ing and supporting a form, an approximately V-shaped support provided at its apex with an extension engaging the lower edge of the form plate and extending beyond the same, said support having a stop at the said extension for limiting the inward movement of the form plate, posts pivoted to the arms of the support, radius rods having graduations on their upper faces pivoted at one end to the inner face of the form plate at the extensions, each post having an opening for a radius rod, and means for clamping each rod in adjusted position with respect to the post, said support being adapted to rest upon a supporting surface, and supporting rods slidably connected with the form plate at the inner side thereof and near the ends of the said plate for engaging the said surface at their lower ends to sup port the plate.

2. A device of the character specified, comprising a flexible resilient form plate having on one face at the lower edge thereof and at its ends spaced extensions for engaging and supporting a form, an approximately V- shaped support provided at its apex with an extension engaging the lower edge of the form plate and extending beyond the same, 7

said support having a stop at the said extension for limiting the inward movement of the form plate, posts pivoted to the arms of the support, radius rods pivoted at one end to the inner face of the form plate at the extensions, each post having an opening for a radius rod, and means for clamping each rod in adjusted position wit-h respect to the post.

LEWIS R. CARROLL. Witnesses GEO. W. WEARN, P. YORK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. C. 

